using Microsoft.Extensions.DependencyInjection;
using xCommons.Extensions;
using xExceptions.Constants;
using xModels.Base;
using xModels.Interfaces;

namespace xModels.Extensions {
    public static class DIExtensions {
        /// <summary>
        /// Register an Specific Store in DI ...
        /// </summary>
        /// <param name="services">DI service collection ...</param>
        /// <param name="store">an implementation of inetrface of store ...</param>
        /// <param name="lifeTime">service lifetime</param>
        /// <typeparam name="TImplementation">implementation of TType ...</typeparam>
        /// <typeparam name="TType">an inetrface which implements IXBaseStore<TStoreItemDto, TKey></typeparam>
        /// <typeparam name="TStoreItemDto">type of an instance of XBaseStorable<TKey></typeparam>
        /// <typeparam name="TKey">type of key of StorableItem</typeparam>
        /// <returns></returns>
        public static void AddXStore<TImplementation, TType, TStoreItemDto, TKey> (
            this IServiceCollection services,
            TImplementation store,
            ServiceLifetime lifeTime = ServiceLifetime.Singleton
        )
        where TImplementation : TType
        where TType : IXBaseStore<TStoreItemDto, TKey>
            where TStoreItemDto : XBaseStorableDto<TKey> {
                //
                // Validate Args ...
                if (store.IsNull ()) {
                    throw XException.InvalidArgs
                        .ToException ();
                }

                //
                // Register Service in DI ...
                services.Add (new ServiceDescriptor (typeof (TType), typeof (TImplementation), lifeTime));
            }
    }
}